Pyrolysis and Devolatilization of High-Density Polyethylene

Abstract

A simple model for combined pyrolysis and devolatilization of high-density polyethylene (HDPE) is developed and studied. The model parameters are estimated from available literature data, and the resulting predictions are compared with a single thermogravimetric experiment. It is found that the bubble loss model makes a better prediction than a critical carbon number loss model. As expected, the bubble loss model is seen to lose validity when the sample becomes predominantly composed of volatile species.

Fire Safety Research Institute Materials and Products database—A resource to support fire modeling

“…The concept of the database was first presented in 2016, and several publications and presentations since then have described the vision and philosophy of the NIST Material Flammability Database and have publicized a selection of the data and analytical techniques used to derive material properties from the raw collected data. [22][23][24] The past efforts to develop and maintain material property data sets that have been commonly used by fire model practitioners as well as a review of the literature which details the state of the art in material characterization have informed the development of the database that is the subject of this work. The process of determining effective material properties that accurately represent a material in a fire model is called calibration of the model, and the process may take the form of direct measurement, literature search, inference through optimization of experimental data, or a hybrid approach that incorporates aspects of all three methods.…”